Portion of a display screen with a graphical user interface



FIG. 1 is a front view of a portion of a display screen with a graphical user interface.

FIG. 2 is a front view of a second embodiment thereof.

FIG. 3 is a front view of a third embodiment thereof.

FIG. 4 is a front view of a fourth embodiment thereof.

FIG. 5 is a front view of a fifth embodiment thereof.

FIG. 6 is a front view of a sixth embodiment thereof.

FIG. 7 is a front view of a seventh embodiment thereof.

FIG. 8 is a front view of an eighth embodiment thereof.

FIG. 9 is a front view of a ninth embodiment thereof.

FIG. 10 is a front view of a tenth embodiment thereof.

FIG. 11 is a front view of an eleventh embodiment thereof.

FIG. 12 is a front view of a twelfth embodiment thereof.

FIG. 13 is a front view of a thirteenth embodiment thereof.

FIG. 14 is a front view of a fourteenth embodiment thereof.

FIG. 15 is a front view of a fifteenth embodiment thereof.

FIG. 16 is a front view of a sixteenth embodiment thereof.

FIG. 17 is a front view of a seventeenth embodiment thereof.

FIG. 18 is a front view of an eighteenth embodiment thereof.

FIG. 19 is a front view of a nineteenth embodiment thereof.

FIG. 20 is a front view of a twentieth embodiment thereof.

FIG. 21 is a front view of a twenty-first embodiment thereof.

FIG. 22 is a front view of a twenty-second embodiment thereof.

FIG. 23 is a front view of a twenty-third embodiment thereof.

FIG. 24 is a front view of a twenty-fourth embodiment thereof.

FIG. 25 is a front view of a twenty-fifth embodiment thereof.

FIG. 26 is a front view of a twenty-sixth embodiment thereof.

FIG. 27 is a front view of a twenty-seventh embodiment thereof; and,

FIG. 28 is a front view of a twenty-eighth embodiment thereof.

The broken lines illustrating a portion of a display screen form no part of the claimed design. 

CLAIM The ornamental design for a portion of a display screen with a graphical user interface, as shown and described. 